Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 9 May 2026 at 21:30 UTC. It is kept here as a record.
No stronger detection stands among the 36 recorded within 20 km of this point since 16 March 2026 — 19 others scored the same. The last comparable one was on 30 April 2026. 5 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued May 9 at 3:33PM CDT until May 9 at 4:30PM CDT by NWS Austin/San Antonio TX
An estimated 1,400,925 people live within 50 km of this point.
Nearby, since 16 March 2026
- May 9, 2026 · score 52 · 2.8 km
- May 11, 2026 · score 52 · 7.3 km
- August 28, 2026 · score 52 · 9.1 km
How we know
Confirmed by 3 independent sources, including NOAA.
Our own score for this event is 52 out of 100, at 91 % confidence.
The score is ours, computed from intensity, exposed population and local history — not the source’s.
Computed under scoring rules v1. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | Medium |
| Calamity Score (ours) | 52 / 100 |
| Our confidence | 91% |
| Coordinates | 30.1260, -97.7760 |
| Nearest City | Austin (16 km) |
| Population Exposed | 1.4M within 50 km |
| Impact Tier | significant |
| Timestamp | 2026-05-09T20:33:00.000Z |
| Source | https://api.weather.gov/alerts/urn:oid:2.49.0.1.840.0.8740a2123a2f8b61cb27ad7e3d4b70d2b7c10e26.001.1 |
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Bastrop, TX; Caldwell, TX; Hays, TX; Travis, TX |
| Headline | Severe Thunderstorm Warning issued May 9 at 3:33PM CDT until May 9 at 4:30PM CDT by NWS Austin/San Antonio TX |
| Expires | 2026-05-09T16:30:00-05:00 |
| SenderName | NWS Austin/San Antonio TX |
| HasExactCoords | true |
| Iem TypeSummary | H |
| Iem Magnitude | 0.75 |
| Iem Unit | Inch |
| Iem City | 4 WNW Serenada |
| Iem County | Williamson |
| Iem State | TX |
| Iem Wfo | EWX |
| Iem Remark | photo showing a few stones of half inch to near penny size. Time and location estimated via radar. |
| MergedSources | [{"id":"iem_H_30.440_-97.620_1778353440000","source":"iem","severity":"low","severityValue":25,"timestamp":1778353440000,"latitude":30.44,"longitude":-97.62},{"id":"iem_H_30.720_-97.750_1778345460000","source":"iem","severity":"low","severityValue":25,"timestamp":1778345460000,"latitude":30.72,"longitude":-97.75}] |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
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